March 19, 2020 at 2:03 pm #82415
I suggest visiting the HerRoom web site. They have lots of information on how to measure correctly, various breast shapes, bra styles, how they are intended to fit, what they are intended to do, etc.
One thing that they have done is to develop a method called Universal Cup Size (UCS). They sell bras from all over the world and the cup size designations are different. The UCS is a tool to help make the correspondence.
Search the site for “bra fitting” and that will take you to the section…